Crankshaft Oil Seal, Replacing (M52 Tu And M54 Engines - BMW 5251 Service Manual

Camshaft Timing Chain
lnstall vibration damper mounting bolts. Note hub locating
dowel (arrow).
Tightening torque
Vibration damper to crankshaft hub
(ME)
22
Nm
(16
ft-lb)
-
Installation is reverse of removal noting the following:
Installing drive belts. See 020 Maintenance.
Install cooling fan. See 170 Radiator and Cooling Sys-
tem.
Crankshaft
oil
seal, replacing
(M52 TU and M54 engines)
The crankshafl front seal
IS
located in the lower timing cover,
behind the vibrat~on damper.
-
Disconnect negative (-) cable from battery.
Disconnecting the battery may erase fault code(s) storedin
control module memoy Checlc for fault codes using spe-
cial BMW diagnostic equipment.
Prior to disconnecting the battery, read the battery dis-
connection cautions given in 001 General Cautions
a n d Warnings.
-
Remove splash guard from beneath engine
-
Remove engine cooling fan assembly. See 170 Radiator
and Cooling System.
NOTE-
Cooling fan nut (32 mm wrench) has left-hand threads.
-
Remove drive belts. See 020 Maintenance
NOTE-
Mark direction of belt rotation if reusing belt.
-
Install crankshaft holding tool (BMW special tool 11 8 19011 1
8 200). Make sure tool locks into place in openings in damper
assembly. While counterholding crankshafl with special tool,
remove crankshaft center bolt.
CAUTIOI\C
Do not use flywheel locling tool to hold crankshaft station-
ary to loosen or tighten cranl(shaft hub center bolt. Use
only the special tools specified, or equivalent hub holding
tool.
Use care when removing damper/hub assembly, as ~t is
easy to damage the radiator